Keratin is a protein that already exists naturally in your hair.Keratin forms a protective shield around the hair shaft and helps your hair stay elastic and youthful.Unfortunately, keratin can be depleted due to over-styling, heat, chemicals, and other damaging processes. keratin hair products, add keratin back into protein depleted hair. This results in reduced breakage and smoother hair. Coconut milk is made from the white flesh inside of ripe coconut shells mixed with water. Coconut milk has a high protein profile that keep your hair strong.